while outer ­sidewalls of the tire are reinforced with ­DuraSkin fabric to provide even more reliability

CENTER LOCK for quicker installation

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utilizing the same exclusive 3C Graphene compound structure

Whether you're on a local group ride

SHIMANO Ultegra R8100 Cassette - 12-Speed - 11-34t - Discontinued can be discounted while outer ­sidewalls of theThe uninterrupted shifting experience of the Shimano Ultegra CS R8100 12 speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12 speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range. Refined 12 step gear combination provides